Q: Cooling fan won't stop running.

asked by on

I have a coolant leak. I recently replaced the thermostat and had a mechanic replace the gasket. The cooling fan is constantly running.

Hi there. The cooling system can leak from so many different spots that it can be hard to diagnose. If the problem occurred right after the thermostat and gasket were replaced then the work may not have be performed properly. If this was occurring prior to the parts being replaced then the leak may be from someplace else. If you cannot see the leak visually then a more in depth inspection must be done. A mechanic would opt for either a pressure test or a dye test to find the source of the leak. As for the fan running all of the time, this can occur if the coolant level is low or if the engine is overheating. The coolant leak should be located first and repaired to see if the fan begins working properly. Getting some help from a certified mechanic, like one from YourMechanic, who had a cooling system pressure tester can make this a lot easier.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Cooling fan won't stop running.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do you change the unit of measurement in the message system?

Your car comes from the factory set to show English measurements. However, it can be changed to metric if you prefer. To change your units from English to metric, just: Cycle through the menu to find “units.” Press the...

Q: 99 mercury cougar with a 4 cylinder leaking antifreeze from the overflow hose but car is not over heating could it possibly be the

The first thing you should have done is to have the reservoir pressure cap checked to see if it is able to hold pressure specified on the cap. If the cap cannot hold pressure then it will leak out of...

Q: My SUV is has multiple misfire p0300. Plus it also has two more codes for the secondary air too?

Engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination of both. Spark related problems generally will result from things like ignition coils, crankshaft...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.